buckland



UNITED STATES;

PATENT OFFICE.

II. BUCKLAND, or SPRINGFIELD, MASSACHUSETTS.-

- IMPROVEMENT IN wATcHoAsI-z 'SPRING-s.

. Speciscnon formingpart of 'Letters Patent No. 77,579, eased May s,v186e, A

- To all whom it may concern:

-of Massachusetts, have invented a new,l useful, and ImprovedCatch-Spring for Watches;

and I do hereby declare 'that the followingis a full and cleardescription thereof, reference being had to the accompanying drawings,and

' to the letters of reference marked thereon:

' In the drawings, Figure 1 is aplan View of the caseof awatch with apartial section,

and Fig.^2 a' sectional View of the same part A 'crosswise -Thisinvention consists of a new construc-A tion of a spring for. thepurposes above mentioned, and is intended to `entirely obviate certaindiicultes attending the old forma-y tion ofspring. t

In the ordi-nary method of constructing-the springs for the purpose ofthrowing open the pase and latching it when shut down two distinctsprings have been used. 'lhese are short piecesl of spring metalinserted1 in the case underneath the edge, one end of each beingfastened by means of a small screw put-through the rim of the case andthrough the-spring. This requires a hole to be made through eachspring-piece and corresponding holes in the case. Nowwhen byany'accident either of these springs are broken, in'order to put a newone in its place it must be manufactured of the proper length vand thehole for the screw drilled at exactly the proper spot to correspond withthe holes in the case. Thisis a troublesome operation and requires aconsiderableexpenditure of time for its performance. In my invention Itotally dispense with the fastening-screws" and make both'springs inon'e, as I will nowdescribe.

In the drawings it is seen that the spring Areaches past a straightline, bisecting the' 'catch dis v circumference of the groove a in thecase at Be it known 'that I, E. H. BUCKLAND, of l Sprngiield, Hampdencountyommonwealth both ends, thus occupying over. half of thecircumference, At`one end,`next to the-hinge of the watch, is the tongueb, which throws up the-back platedwhen itis released fromthe catch.` Inthis arrangement of spring I. prefer to form the catch itself upon thestud and let the spring press against it. Thus the formed upon thelstudE,` and is pressed outward bythe springA against it at this-point.`The advantages of this last arrangement are that 'the stud, confined bythe 'spring on one side and prevented by the head formed upon fit in thecatch from slipping` through, does not -require any pin to be putthrough it in order to hold it in place. The catch may, however, be:made direct-1y upon the spring at a point opposite the hinge, if sodesired. Y

In putting in these springs all that is required to fasten them in placeis to compress them sufficiently to 'allow them to get inside thegroove, and upon releasing them theyspring .against the side of thewatch-case inside, and being more. than .half the circumference inlength they do not require any fastening to hold themin place.

Now having described myn-invention, what I claim as new, and desire tosecure by Let; Y

ters Patent, is'-` 1.- The spring A, formed of one piece and reachingover half the circumference of the c ase and forming both catch andthrow upat each end, respectivelygsubstantially as and for the purposeshown.

2. The stud E, with the catch d' formedu'pbn' it', substantially as andfor the'purpose shown.

E. H. BUCKLAND.

Witnesses WM. H. BRADBURY,

E. H. HYDE.

